JP2017164865A - Cutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a constitution capable of providing an excellent cutting surface by surely contacting an upper blade at a point with an object, in a cutter for cutting the object by nipping by a lower blade and the upper blade.SOLUTION: A cutter 1 comprises a lower blade base 41 for supporting a lower blade 50, an upper blade unit 60 for rotatably supporting an upper blade 70 with the horizontal direction as the axis and vertically moving between a top dead center position (a first position) and a bottom dead center position (a second position) to the lower blade base 41 and a coil spring 63 for energizing the upper blade 70 so as to approach the lower blade 50 in the rotational direction. The upper blade 70 comprises a claw part 72 of inclining its upper side edge 71 upward toward the other side from one side, projecting to the lower side from one side of the upper side edge 71 and abutting on the lower blade 50 in the top dead center position. The lower blade base 41 is fixably constituted in a state of inclining the lower blade 50 to the upper blade 70 so that a part on the opposite side of the side for abutting on the claw part 72 of the lower blade 50, overlaps with the upper blade 70 when viewing the upper blade 70 and the lower blade 50 in the vertical direction in the top dead center position.SELECTED DRAWING: Figure 11

Description

  The present invention relates to a cutting machine for cutting an object.

  2. Description of the Related Art Conventionally, a cutting machine that cuts an object by being sandwiched between a lower blade and an upper blade is known. For example, Patent Documents 1 to 3 disclose techniques related to this type of cutting machine.

  In patent document 1, the attachment structure of the shear blade of the following structures is described. A movable blade is attached to the movable blade holder, a fixed blade is arranged on the support plate, and a slide pin is horizontally passed through the rear end plate provided on the support plate to prevent the fixed blade from being fixed. An elastic member that presses the blade surface against the blade surface of the movable blade is disposed, and the movable blade is provided with a guide plate that protrudes toward the fixed blade and engages with the front surface of one end portion of the fixed blade. A stopper that engages with the front surface of the other end portion of the fixed blade is provided on the front surface of the support plate, and a notch for releasing the engagement between the stopper and the fixed blade is provided at least in one circumferential direction of the stopper.

  Patent Document 2 describes a flexible sheet cutting device having the following configuration. The cutting device for a flexible sheet arranges an upper cutting blade having a tapered cutting edge above the flexible sheet, and urges the cutting edge of the upper cutting blade backward by a compression coil spring. The upper cutting blade is lowered by the pressing force of the cylinder. Moreover, the lower cutting blade provided with the parallel blade edge below the flexible sheet | seat is arrange | positioned. In the lower cutting blade, a guide portion having an inclined surface is formed at one end portion of the blade edge, and a flank is formed on the front surface of the blade edge.

  Patent Document 3 includes a fixed blade and a movable blade that presses and slides at a shear angle with respect to the blade edge of the fixed blade. A swing fulcrum that supports the movable blade in a swingable manner is used as a drive shaft. A sheet material cutting device is described which cuts a sheet material inserted between a movable blade edge and a fixed blade edge by being moved on a circular arc.

JP-A-8-197485 Japanese Patent Laid-Open No. 10-217184 Japanese Patent Laid-Open No. 2000-084888

  In a cutting machine that cuts an object by being sandwiched between a lower blade and an upper blade, it is preferable that the upper blade is brought into point contact in order to concentrate the pressure at the cutting portion. In the structures disclosed in Patent Document 1 and Patent Document 2, since the upper blade and the lower blade are in a parallel positional relationship, depending on the thickness of the object and the set position, there is a risk of line contact in the cutting process. there were. In Patent Document 3, a mechanism for moving the oscillating fulcrum supporting the movable blade on an arc is required, and the structure becomes complicated.

  An object of the present invention is to provide a configuration capable of obtaining a good cut surface by reliably bringing the upper blade into point contact with the object in a cutting machine that is sandwiched between the lower blade and the upper blade to cut the object. To do.

  The present invention is a cutting machine that sandwiches a lower blade (for example, a lower blade 50 described later) and an upper blade (for example, an upper blade 70 described later) to cut an object (for example, a sheet 100 described later), A base (for example, a lower blade unit 40 described later) that supports the lower blade, and the upper blade that is rotatable about a horizontal direction as an axis, and a first position before cutting with respect to the base (for example, A gantry (for example, an upper blade unit 60 described later) that moves up and down between a second position (for example, a lower dead center position described later) below the first position from the upper dead center position (described later), and a rotation direction And an urging portion (e.g., a coil spring 63 described later) for urging the upper blade so as to approach the lower blade, and the upper blade has its blade tip upward from one side to the other side. A claw that inclines and protrudes downward from one side of the blade edge and contacts the lower blade at the first position. (For example, a claw portion 72 described later), and the base comes into contact with the claw portion of the lower blade when the upper blade and the lower blade are viewed in the vertical direction at the first position. It is related with the cutting machine comprised so that fixation is possible in the state which inclined the said lower blade with respect to the said upper blade so that a part on the opposite side may overlap with the said upper blade.

  The base is a first adjustment mechanism that adjusts the position of one side of the lower blade in a direction perpendicular to the cutting direction of the object (for example, a lower blade adjustment mechanism 80 disposed on one side in the left-right direction described later). ), And a second adjustment mechanism that adjusts the position of the other side of the lower blade in a direction orthogonal to the cutting direction of the object (for example, a lower blade adjustment mechanism 80 disposed on the other side in the left-right direction described later). It is preferable to have.

  It is preferable that the urging portion is arranged on the gantry and configured so that the urging force can be adjusted.

  It is preferable that an inclination angle (for example, an inclination angle α described later) of the lower blade with respect to the upper blade in the first position is in a range of greater than 0 degree and less than or equal to 1 degree.

  According to the present invention, in a cutting machine that is sandwiched between a lower blade and an upper blade and cuts an object, the upper blade can be surely brought into point contact with the object to obtain a good cut surface.

It is a figure which shows the cutting machine which concerns on one Embodiment of this invention. It is a side view which shows the sheet | seat cutting part of this embodiment. It is a front view which shows the sheet | seat cutting part of this embodiment. It is a top view which shows the sheet | seat cutting part of this embodiment. It is a side view which shows the internal structure of the sheet | seat cutting part in a top dead center position. It is a front view which shows the positional relationship of the upper blade and lower blade in a top dead center position. It is a top view which shows the positional relationship of the upper blade and lower blade in a top dead center position. It is a cross-sectional view which shows a lower blade adjustment mechanism. It is a side view which shows the principal part of the sheet | seat cutting part by which the lower blade was adjusted to the front side relatively. It is a side view which shows the principal part of the sheet | seat cutting part in which the lower blade was adjusted to the rear side relatively. It is a figure which shows typically the positional relationship of the upper blade and lower blade in the state where an upper blade base exists in a top dead center position. It is a figure which shows typically the positional relationship of the upper blade and lower blade in the state where an upper blade base exists in a stroke center position. It is a figure which shows typically the positional relationship of the upper blade and lower blade in the state in which an upper blade base exists in a bottom dead center position.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. The cutting machine 1 of the present embodiment is for cutting a sheet 100 to be cut by being sandwiched between a lower blade 50 and an upper blade 70. FIG. 1 is a diagram showing a cutting machine 1 according to an embodiment of the present invention. FIG. 2 is a side view showing the sheet cutting unit 20 of the present embodiment.

  First, the overall configuration of the cutting machine 1 will be described. As shown in FIG. 1, the cutting machine 1 includes a casing 11, a sheet introducing unit 12, a sheet conveying unit 13, a slit forming unit 14, an operation unit 15, and a sheet cutting unit 20. Prepare as.

  The housing 11 is an exterior part that supports each part constituting the cutting machine 1. The sheet introducing unit 12 has a swing mechanism, and the sheet 100 to be cut is sent from the sheet introducing unit 12 to the sheet conveying unit 13. The sheet conveyance unit 13 sends the sheet 100 to the sheet cutting unit 20 by a plurality of conveyance rollers 16 (see FIG. 2) that are rotationally driven. The sheet conveying unit 13 of the present embodiment has a nip pressure / gap adjustment function.

  The slit forming unit 14 is disposed on the upstream side of the sheet cutting unit 20 and forms a slit with respect to the conveyed sheet 100. The slit forming unit 14 of the present embodiment has a function of adjusting the vertical position of the slit blade and a function of adjusting the position of the end of the sheet 100 in the width direction. The operation unit 15 is for performing various operations of the cutting machine 1 and is a touch panel type electronic component.

  The sheet cutting unit 20 is a part for cutting the sheet 100 sent out by the conveyance roller 16 of the sheet conveyance unit 13. Next, a detailed configuration of the sheet cutting unit 20 will be described.

  As shown in FIG. 2, the sheet cutting unit 20 includes a lower blade unit 40 and an upper blade unit 60 that moves up and down with respect to the lower blade unit 40.

  The lower blade unit 40 includes a lower blade base 41 fixed to the housing 11 and a lower blade 50 attached to the upper surface of the lower blade base 41.

  The upper blade unit 60 includes an upper blade base 61, an upper blade support 62, a coil spring 63, and a sheet pressing portion 64.

  The upper blade base 61 moves up and down with respect to the lower blade base 41 by the driving force of the drive motor 90 disposed below the lower blade unit 40. The drive motor 90 of this embodiment is a clutch / brake motor.

  The rotational force of the drive motor 90 is transmitted to the disk-shaped disk portion 92 via the pulley belt 91. The disk portion 92 is provided with an eccentric shaft 93 at a position eccentric from its center. The eccentric shaft 93 is connected to the upper blade base 61 via a link mechanism 94. The link mechanisms 94 are connected to both sides of the upper blade base 61, respectively. The link mechanism 94 converts the rotational motion of the eccentric shaft 93 into a linear motion, and the upper blade base 61 has a predetermined stroke range from the top dead center position (first position) to the bottom dead center position (second position). To move.

  FIG. 3 is a front view showing the sheet cutting unit 20 of the present embodiment. In FIG. 3, the drive motor 90 is not shown. As shown in FIG. 3, the link mechanism 94 is provided with a top dead center detection sensor 95 that detects the top dead center. The top dead center detection sensor 95 detects the top dead center of the upper blade unit 60 based on the movement of the link mechanism 94, and the timing of clutch OFF and brake ON is controlled based on the detection signal of the top dead center detection sensor 95. Is done.

  The upper blade support body 62 is formed in a rectangular parallelepiped block shape, and both sides thereof are rotatably supported by the upper blade base 61 via a rotation shaft 65. The rotating shaft 65 faces the horizontal direction, and the upper blade support 62 is rotatably supported within a predetermined angle range including the vertical direction.

  An elongated upper blade 70 is fixed to the upper blade support 62. The upper blade 70 includes an upper blade edge 71 and a claw portion 72. The upper blade edge 71 is formed so as to incline upward from one side in the longitudinal direction (the right side in FIG. 3) to the other side (the left side in FIG. 3) in a front view. The claw portion 72 protrudes downward from one side in the longitudinal direction of the upper blade edge 71.

  As shown in FIG. 2, the coil spring 63 is disposed between the upper blade base 61 and the upper blade support 62 and above the rotation shaft 65. The upper blade support 62 is biased by the coil spring 63 in a direction in which the upper portion thereof is separated from the upper portion of the upper blade base 61.

  FIG. 4 is a plan view showing the sheet cutting unit 20 of the present embodiment. As shown in FIG. 4, the coil springs 63 are disposed on the left and right sides of the upper blade unit 60.

  A base side accommodation portion 66 that accommodates the rear end portion of the coil spring 63 is formed on the upper blade base 61, and a support side accommodation portion 67 that accommodates the front end portion of the coil spring 63 is the upper blade support body 62. Formed. The base side accommodating portion 66 and the support side accommodating portion 67 are formed at two positions on each of the left and right sides, and a total of four positions are formed.

  In the example shown in FIG. 4, a total of two coil springs 63 are disposed in the base-side accommodation portions 66 and the support-side accommodation portions 67 at both left and right ends. On the other hand, the coil spring 63 is not disposed in the base side accommodation portion 66 and the support side accommodation portion 67 located on the inner side. As will be described later, the number and type of coil springs 63 can be adjusted according to the object to be cut.

  In addition, the support-side accommodating portion 67 is provided with an urging force adjusting portion 68 that can adjust the urging force in a state where the coil spring 63 is accommodated. The urging force adjusting unit 68 of the present embodiment can adjust the urging force by changing the compression amount of the coil spring 63 by adjusting the fastening force of the nut portion of the urging force adjusting unit 68 with a hexagon wrench. .

  FIG. 5 is a side view showing the internal structure of the sheet cutting portion 20 at the top dead center position. As shown in FIG. 5, the force (see the white arrow in FIG. 5) that urges the upper blade support 62 by the coil spring 63 acts, so that the upper blade support 62 is installed in the direction in which the lower blade 50 is installed. Is given a rotational force (black arrow in FIG. 5).

  If the urging force by the coil spring 63 is increased, the force with which the upper blade 70 is pressed against the lower blade 50 increases. In the present embodiment, the urging force and the number of the coil springs 63 can be adjusted, so that the pressing force of the upper blade 70 against the lower blade 50 can be flexibly adjusted according to the object to be cut. For example, the pressure can be adjusted more precisely by changing the number of the coil springs 63 after changing the coil springs 63 to those having different urging forces.

  FIG. 6 is a front view showing the positional relationship between the upper blade 70 and the lower blade 50 at the top dead center position. As shown in FIG. 6, when the upper blade base 61 is at the top dead center, the claw portion 72 of the upper blade 70 is in contact with the front side of the lower blade 50. At this time, the upper blade edge 71 and the lower blade edge 51 are not in contact. Accordingly, at the position where the upper blade base 61 is at the top dead center, the posture of the upper blade 70 is maintained by the claw portion 72 that contacts the lower blade 50.

  FIG. 7 is a plan view showing the positional relationship between the upper blade 70 and the lower blade 50 at the top dead center position. As shown in a plan view of FIG. 7, when the positional relationship between the upper blade 70 and the lower blade 50 is viewed in the moving direction of the upper blade unit 60 in the state at the top dead center position, the claw portion 72 of the upper blade 70. A part of the side opposite to the side where the is formed overlaps the lower blade 50. That is, the lower blade 50 moves the sheet 100 in the conveying direction (lower side of the drawing in FIG. 7) from the side (right side of the drawing in FIG. 7) where the claw portion 72 of the upper blade 70 comes into contact to the opposite side (left side of the drawing in FIG. 7). ) Is attached to the lower blade base 41 so as to be inclined by a predetermined angle α. Note that the predetermined angle α is preferably a minute angle, for example, in the range of more than 0 degree and not more than 1 degree with respect to the longitudinal direction of the upper blade, and 0.05 degree from the viewpoint of further improving the cutting situation. More preferably, it is in the range of 0.1 degrees or less.

  Next, the position adjustment function of the lower blade 50 provided in the cutting machine 1 of the present embodiment will be described. As shown in FIG. 5, the lower blade base 41 is provided with a lower blade adjustment mechanism 80. The lower blade adjusting mechanism 80 includes a screw portion 81 that moves in the front-rear direction with respect to the lower blade base 41, a lower blade stopper 82 that moves integrally with the screw portion 81 and determines the position of the lower blade 50, and a lower blade base. 41, a stopper spring 83 that urges the lower blade stopper 82 in a direction to contact the lower blade 50.

  FIG. 8 is a cross-sectional view showing the lower blade adjusting mechanism. As shown in FIG. 8, the lower blade adjustment mechanism 80 is disposed on both sides of the lower blade base 41 in the longitudinal direction. The position of the lower blade 50 can be adjusted by moving the lower blade stopper 82 by adjusting the screw portion 81 with an operating instrument such as a screwdriver. The lower blade stopper 82 of the present embodiment contacts the rear surface of the lower blade 50 and restricts the movement of the lower blade 50.

  The lower blade 50 can be inclined with respect to the upper blade 70 in a plan view by operating the screw portions 81 arranged on the left and right sides respectively and adjusting the position of the lower blade stopper 82 in the front-rear direction. After the position adjustment with the lower blade stopper 82, the lower blade 50 is fixed to the lower blade base 41 with a fastening member such as a bolt.

  In the present embodiment, the lower blade adjustment mechanism 80 also adjusts the cutting angle of the upper blade 70. FIG. 9 is a side view illustrating a main part of the sheet cutting unit 20 in which the position of the lower blade 50 is relatively adjusted to the front side. In addition, illustration of the lower blade stopper 82 is abbreviate | omitted in FIG.

  As shown in FIG. 9, when it is desired to incline the direction of the upper blade 70 toward the downstream side in the conveying direction of the sheet 100, the lower blade 50 is relatively positioned on the front side. In FIG. 9, the lower blade 50 protrudes forward from the lower blade base 41 by a distance d. When the lower blade 50 is moved to the front side in a state where the claw portion 72 is in contact, the upper blade support 62 follows by the urging force of the coil spring 63, and the upper blade edge 71 (tip) of the upper blade 70 is tilted forward. Become.

  FIG. 10 is a side view illustrating a main part of the sheet cutting unit 20 in which the lower blade 50 is relatively rearwardly adjusted. In FIG. 10, the illustration of the lower blade stopper 82 is omitted.

  As shown in FIG. 10, when it is desired to incline the direction of the upper blade 70 toward the upstream side in the conveyance direction of the sheet 100, the lower blade 50 is relatively positioned on the rear side. In FIG. 10, the lower blade 50 is located inside the lower blade base 41. When the lower blade 50 is moved to the rear side in a state where the claw portion 72 is in contact, the upper blade support 62 follows by the urging force of the coil spring 63, and the upper blade edge 71 of the upper blade 70 is inclined to the rear side. .

  Thus, the cutting angle can be adjusted by the lower blade adjustment mechanism 80. For example, when the thickness of the sheet 100 that is the object to be cut is large, or when the number of stacked sheets 100 is large, the sheet 100 tends to move away from the lower blade 50 during cutting. In such a case, as shown in FIG. 10, by tilting the direction of the upper blade 70 toward the upstream side in the conveying direction, the sheet 100 becomes difficult to escape from the lower blade 50, and the cutting operation can be performed appropriately. it can.

  The main configuration of the sheet cutting unit 20 is as described above. Next, the behavior of the upper blade 70 when performing the cutting process will be described with reference to FIGS. 11 to 13.

  FIG. 11 is a diagram schematically showing the positional relationship between the upper blade 70 and the lower blade 50 in a state where the upper blade base 61 is at the top dead center position. 11A corresponds to the position of line AA in FIG. 6, FIG. 11B corresponds to the position of line BB, and FIG. 11C corresponds to the position of line CC. As shown in FIGS. 11A to 11C, in the state where the upper blade base 61 is at the top dead center position, only the claw portion 72 of the upper blade 70 is in contact with the lower blade 50, and the upper blade edge. About 71, it is the state which is not contact | abutting to the lower blade 50. FIG. The lower blade 50 is inclined with respect to the upper blade 70 (see FIG. 7). Thus, since the posture of the upper blade 70 is maintained by the claw portion 72, the cutting angle of the upper blade 70 is determined by the position of the lower blade 50 in the front-rear direction as described above.

  As the upper blade base 61 moves downward from the top dead center position shown in FIG. 11, the contact portion of the upper blade edge 71 with the sheet 100 gradually moves from the claw 72 side to the opposite side.

  FIG. 12 is a diagram schematically showing a positional relationship between the upper blade 70 and the lower blade 50 in a state where the upper blade base 61 is at the stroke center position. (A) to (c) in FIG. 12 correspond to the positions (a) to (c) in FIG. 11, respectively. As shown in FIGS. 12A to 12C, when the upper blade base 61 is lowered from the top dead center position to the stroke center position, the contact portion of the upper blade edge 71 also moves to the center in the left-right direction.

  As shown in FIG. 12A, the portion of the upper blade edge 71 on the opposite side of the claw portion 72 from the center in the left-right direction is not in contact with the lower blade 50. Further, as shown in FIG. 12C, the upper blade edge 71 closer to the claw portion 72 than the contact portion is separated from the lower blade 50.

  As the upper blade base 61 moves further from the stroke center position to the bottom dead center position, the contact portion of the upper blade edge 71 with the sheet 100 gradually moves further away from the claw portion 72 from the center.

  FIG. 13 is a diagram schematically showing the positional relationship between the upper blade 70 and the lower blade 50 in a state where the upper blade base 61 is at the bottom dead center position. 13A to 13C correspond to the positions of FIGS. 11A to 11C, respectively. At the bottom dead center position, as shown in FIG. 13C, in the state where the upper blade base 61 is at the bottom dead center position, the upper blade 70 is the end of the upper blade edge 71 opposite to the claw 72. Is a contact portion with the lower blade 50.

  In the state shown in FIG. 13, the lower blade 50 is inclined to the opposite side to the inclination at the top dead center position with respect to the upper blade 70. The center of the upper blade edge 71 and the side where the claw portion 72 is formed are in a state of being separated from the lower blade 50. In this state, as shown in FIG. 13A, the gap between the claw portion 72 and the lower blade 50 is larger than that in the state shown in FIG.

  As described above, according to the cutting machine 1 of the present embodiment, the claw portion 72 keeps point contact with the movement of the upper blade base 61 from the top dead center position to the bottom dead center position. It moves gradually toward the opposite side of the portion 72.

According to the embodiment described above, the following effects can be obtained.
That is, the cutting machine 1 of the present embodiment supports the lower blade base 41 that supports the lower blade 50, and the upper blade 70 that is rotatable about the horizontal direction, and the top dead center position with respect to the lower blade base 41. An upper blade unit 60 that moves up and down between the (first position) and the bottom dead center position (second position), and a coil spring 63 that urges the upper blade 70 closer to the lower blade 50 in the rotational direction. Prepare. The upper blade 70 has a claw portion whose upper blade edge 71 is inclined upward from one side to the other side, protrudes from one side of the upper blade edge 71 to the lower side, and contacts the lower blade 50 at the top dead center position. 72. In the lower blade base 41, when the upper blade 70 and the lower blade 50 are viewed in the vertical direction at the top dead center position, a part of the lower blade 50 opposite to the side in contact with the claw portion 72 overlaps the upper blade 70. Thus, the lower blade 50 is configured to be fixed in a state where the lower blade 50 is inclined with respect to the upper blade 70.

  Thereby, a cutting | disconnection part will move toward the other side from the one side of a longitudinal direction as the upper blade 70 moves below. For example, when the cut portion is at the center of the upper blade edge 71, not only the side opposite to the claw portion 72 (FIG. 12A) but also the claw portion 72 side (FIG. 12C) is separated from the lower blade 50. It will be. As described above, the lower blade 50 can be satisfactorily brought into point contact with the sheet 100 from the beginning to the end of the cutting process only by moving the upper blade unit 60 supporting the upper blade 70 downward. Is approximately 90 degrees, and a good cut surface of the sheet 100 that is the object to be cut can be obtained.

  Further, the lower blade base 41 of the present embodiment includes a left lower blade adjustment mechanism 80 that adjusts the position of one side of the lower blade 50 in a direction orthogonal to the cutting direction of the sheet 100, and the position of the other side of the lower blade 50. And a lower blade adjusting mechanism 80 on the right side for adjusting the angle in a direction orthogonal to the cutting direction of the sheet 100.

  Thereby, the inclination angle of the lower blade 50 and the cutting angle of the upper blade 70 can be adjusted according to the hardness and thickness of the object to be cut. Moreover, since it functions as the mechanism which adjusts the inclination angle of the lower blade 50 with respect to the upper blade 70, and the mechanism which adjusts the cutting angle of the upper blade 70 which contact | abuts the lower blade 50 via the nail | claw part 72, it cuts. The configuration of the machine 1 can be simply summarized.

  Further, the coil spring 63 of the present embodiment is arranged in the upper blade unit 60 and is configured such that its urging force can be adjusted.

  In the present embodiment, the pressing force of the upper blade 70 can be adjusted by adjusting the number, type, and compression amount of the coil spring 63. Therefore, the biasing force is adjusted according to the hardness and thickness of the object to be cut, and The object can be cut with a moderate pressure. For example, when cutting a hard object, the number of coil springs 63 can be increased to four to increase the applied pressure. Further, when it is desired to reduce the applied pressure as much as possible, the amount of compression of the coil spring 63 can be reduced by the urging force adjusting unit 68 so as to reduce the urging force.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not restrict | limited to the above-mentioned embodiment, It can change suitably. For example, in the above-described embodiment, the coil spring 63 is used as the urging portion. However, the coil spring 63 can be appropriately changed according to circumstances, such as using a spring of another shape such as a torsion spring or an elastic body such as rubber.

  In the above-described embodiment, the configuration using the clutch / brake motor as the drive motor 90 has been described as an example. However, other motors such as a stepping motor and a servo motor may be used. A driving source other than a motor, such as a cylinder, can also be used.

  In the above embodiment, the example in which the cutting machine 1 includes the configuration of the sheet introduction unit 12, the sheet conveyance unit 13, the slit forming unit 14, the operation unit 15, and the like has been described. However, these configurations, for example, the slit forming unit 14 are omitted. Of course, the configuration of the cutting machine 1 can be appropriately changed according to circumstances.

1 Cutting machine 41 Lower blade base (base)
50 Lower blade 60 Upper blade unit (frame)
63 Coil spring (biasing part)
70 Upper blade 71 Upper blade edge 72 Claw portion 80 Lower blade adjustment mechanism (first adjustment mechanism, second adjustment mechanism)
100 sheets (object)

Claims (4)

A cutting machine that sandwiches a lower blade and an upper blade to cut an object,
A base for supporting the lower blade;
A pedestal that supports the upper blade so as to be pivotable about a horizontal direction, and moves up and down between a first position before cutting and a second position below the first position with respect to the base;
An urging portion for urging the upper blade so as to approach the lower blade in a rotation direction;
With
The upper blade has a claw portion whose blade edge is inclined upward from one side toward the other side, protrudes downward from one side of the blade edge, and contacts the lower blade at the first position;
The base is
When the upper blade and the lower blade are viewed in the vertical direction at the first position, the lower blade is arranged such that a part of the lower blade on the opposite side to the side in contact with the claw portion overlaps the upper blade. A cutting machine configured to be able to be fixed in a state of being inclined with respect to the upper blade. The base is
A first adjustment mechanism that adjusts the position of one side of the lower blade in a direction orthogonal to the cutting direction of the object;
A second adjustment mechanism for adjusting the position of the other side of the lower blade in a direction orthogonal to the cutting direction of the object;
The cutting machine according to claim 1 having   The cutting device according to claim 1 or 2, wherein the urging unit is arranged on the gantry and the urging force is configured to be adjustable.   The cutting machine according to any one of claims 1 to 3, wherein an inclination angle of the lower blade with respect to the upper blade in the first position is in a range of greater than 0 degrees and less than or equal to 1 degree.

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